The fact that externalizing a thing makes it disappear is usually a bad thing. Describing rather than experiencing…
What happens is, your answers change each time through. I think this is because your headache changes. Or maybe it�s the other way around: your headache changes because your answers change. In any case there comes a point at which there�s nothing left to change because at that point the headache is gone, you�ve described it out of existence.